| Record Information |
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| Version | 1.0 |
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| Creation date | 2010-04-08 22:09:10 UTC |
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| Update date | 2025-11-18 23:19:59 UTC |
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| Primary ID | FDB010534 |
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| Secondary Accession Numbers | Not Available |
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| Chemical Information |
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| FooDB Name | 4-Hydroxyphenylacetic acid |
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| Description | p-Hydroxyphenylacetic acid, also known as 4-hydroxybenzeneacetate or parahydroxy phenylacetate, belongs to the class of organic compounds known as 1-hydroxy-2-unsubstituted benzenoids. These are phenols that are unsubstituted at the 2-position. p-Hydroxyphenylacetic acid is an extremely weak basic (essentially neutral) compound (based on its pKa). p-Hydroxyphenylacetic acid exists in all living species, ranging from bacteria to humans. p-Hydroxyphenylacetic acid is found, on average, in the highest concentration within a few different foods, such as olives, american cranberries, and grape wines and in a lower concentration in corns, beers, and oats. p-Hydroxyphenylacetic acid has also been detected, but not quantified in, several different foods, such as dandelions, common wheats, cocoa beans, milk (cow), and evening primroses. This could make p-hydroxyphenylacetic acid a potential biomarker for the consumption of these foods. p-Hydroxyphenylacetic acid is a potentially toxic compound. p-Hydroxyphenylacetic acid, with regard to humans, has been found to be associated with several diseases such as schizophrenia, crohn's disease, spina bifida, and ulcerative colitis; p-hydroxyphenylacetic acid has also been linked to the inborn metabolic disorder phenylketonuria. |
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| CAS Number | 156-38-7 |
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| Structure | |
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| Synonyms | | Synonym | Source |
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| (p-Hydroxyphenyl)acetic acid | ChEBI | | 4-Carboxymethylphenol | ChEBI | | 4-Hydroxybenzeneacetic acid | ChEBI | | 4-Hydroxyphenylacetate | ChEBI | | 4-Hydroxyphenylacetic acid | Kegg | | (p-Hydroxyphenyl)acetate | Generator | | 4-Hydroxybenzeneacetate | Generator | | p-Hydroxyphenylacetate | Generator | | (4-Hydroxy-phenyl)-acetate | HMDB | | (4-Hydroxy-phenyl)-acetic acid | HMDB | | (4-Hydroxy-phenyl)-essigsaeure | HMDB | | (4-Hydroxyphenyl)acetate | HMDB | | (4-Hydroxyphenyl)acetic acid | HMDB | | (p-Hydroxyphenyl)-acetate | HMDB | | (p-Hydroxyphenyl)-acetic acid | HMDB | | 4-Hydroxy-benzeneacetate | HMDB | | 4-Hydroxy-benzeneacetic acid | HMDB | | 4-Hydroxyphenyl-acetic acid | HMDB | | Parahydroxy phenylacetate | HMDB | | Parahydroxy phenylacetic acid | HMDB | | Parahydroxyphenylacetate | HMDB | | Para-hydroxyphenylacetic acid | HMDB | | p-Hydroxyphenylacetic acid | ChEBI | | 4'-Hydroxyphenylacetic acid | HMDB | | 2-(4-Hydroxyphenyl)acetic acid | HMDB | | (4-hydroxy-phenyl)-acetate | biospider | | (4-hydroxy-phenyl)-acetic acid | biospider | | (4-hydroxyphenyl)acetate | biospider | | (4-hydroxyphenyl)acetic acid | biospider | | (p-hydroxyphenyl)-acetate | biospider | | (p-hydroxyphenyl)-acetic acid | biospider | | (p-hydroxyphenyl)acetate | biospider | | (p-hydroxyphenyl)acetic acid | biospider | | 3pcg | biospider | | 4-HPA | biospider | | 4-Hydroxy-Benzeneacetate | biospider | | 4-Hydroxy-Benzeneacetic acid | biospider | | 4-Hydroxybenzeneacetic acid, 9CI | db_source | | 4-hydroxyphenyl acetate | biospider | | 4-hydroxyphenylacetate | biospider | | Acetic acid, (p-hydroxyphenyl)- | biospider | | Benzeneacetic acid, 4-hydroxy- | biospider | | DL-para-hydroxyphenylacetic acid | biospider | | p-Hydroxy-a-toluic acid | db_source | | P-hydroxyphenyl acetic acid | biospider | | P-hydroxyphenylacetate | biospider | | P-hydroxyphenylacetic acid | biospider |
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| Predicted Properties | |
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| Chemical Formula | C8H8O3 |
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| IUPAC name | 2-(4-hydroxyphenyl)acetic acid |
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| InChI Identifier | InChI=1S/C8H8O3/c9-7-3-1-6(2-4-7)5-8(10)11/h1-4,9H,5H2,(H,10,11) |
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| InChI Key | XQXPVVBIMDBYFF-UHFFFAOYSA-N |
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| Isomeric SMILES | OC(=O)CC1=CC=C(O)C=C1 |
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| Average Molecular Weight | 152.1473 |
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| Monoisotopic Molecular Weight | 152.047344122 |
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| Classification |
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| Description | Belongs to the class of organic compounds known as 1-hydroxy-2-unsubstituted benzenoids. These are phenols that are unsubstituted at the 2-position. |
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| Kingdom | Organic compounds |
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| Super Class | Benzenoids |
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| Class | Phenols |
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| Sub Class | 1-hydroxy-2-unsubstituted benzenoids |
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| Direct Parent | 1-hydroxy-2-unsubstituted benzenoids |
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| Alternative Parents | |
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| Substituents | - 1-hydroxy-2-unsubstituted benzenoid
- Monocyclic benzene moiety
- Monocarboxylic acid or derivatives
- Carboxylic acid
- Carboxylic acid derivative
- Organic oxygen compound
- Organic oxide
- Hydrocarbon derivative
- Organooxygen compound
- Carbonyl group
- Aromatic homomonocyclic compound
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| Molecular Framework | Aromatic homomonocyclic compounds |
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| External Descriptors | |
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| Ontology |
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| Physiological effect | Health effect: |
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| Disposition | Route of exposure: Source: Biological location: |
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| Foods | Cocoa and cocoa products Grains: Nuts and legumes: Fruits and vegetables: Fats and oils: Beverages: |
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| Physico-Chemical Properties |
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| Physico-Chemical Properties - Experimental | | Property | Value | Reference |
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| Physical state | Solid | |
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| Physical Description | Not Available | |
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| Mass Composition | C 63.15%; H 5.30%; O 31.55% | DFC |
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| Melting Point | Mp 148-150° | DFC |
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| Boiling Point | Not Available | |
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| Experimental Water Solubility | 60.7 mg/mL at 25 oC | GRACIN,S & RASMUSON,AC (2002) |
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| Experimental logP | 0.75 | HANSCH,C ET AL. (1995) |
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| Experimental pKa | pKa 4.59 (10% EtOH aq.) | DFC |
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| Isoelectric point | Not Available | |
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| Charge | Not Available | |
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| Optical Rotation | Not Available | |
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| Spectroscopic UV Data | Not Available | |
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| Density | Not Available | |
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| Refractive Index | Not Available | |
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| Spectra |
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| Spectra | |
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| EI-MS/GC-MS | | Type | Description | Splash Key | View |
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| EI-MS | Mass Spectrum (Electron Ionization) | splash10-0a4i-3900000000-3be1d4a7c16ea7a3eee1 | 2014-09-20 | View Spectrum | | GC-MS | 4-Hydroxyphenylacetic acid, 2 TMS, GC-MS Spectrum | splash10-01ta-1930000000-57c9e8ddaa10569055aa | Spectrum | | GC-MS | 4-Hydroxyphenylacetic acid, 2 TMS, GC-MS Spectrum | splash10-0h01-0940000000-a14203384331e709252f | Spectrum | | GC-MS | 4-Hydroxyphenylacetic acid, non-derivatized, GC-MS Spectrum | splash10-03fs-1930000000-80c21819072fb01958dc | Spectrum | | GC-MS | 4-Hydroxyphenylacetic acid, 2 TMS, GC-MS Spectrum | splash10-00di-9410000000-678591f03aba45c2a6ae | Spectrum | | GC-MS | 4-Hydroxyphenylacetic acid, 2 TMS, GC-MS Spectrum | splash10-0h0r-2940000000-760b6c506072a61059c0 | Spectrum | | GC-MS | 4-Hydroxyphenylacetic acid, non-derivatized, GC-MS Spectrum | splash10-0a4i-2900000000-3939c62b0d7f649ff402 | Spectrum | | GC-MS | 4-Hydroxyphenylacetic acid, non-derivatized, GC-MS Spectrum | splash10-0a4i-6900000000-fdb73325a31c758496e9 | Spectrum | | GC-MS | 4-Hydroxyphenylacetic acid, non-derivatized, GC-MS Spectrum | splash10-0gyk-0980000000-ed36f36969e4d51b9a8d | Spectrum | | GC-MS | 4-Hydroxyphenylacetic acid, non-derivatized, GC-MS Spectrum | splash10-01ta-1930000000-57c9e8ddaa10569055aa | Spectrum | | GC-MS | 4-Hydroxyphenylacetic acid, non-derivatized, GC-MS Spectrum | splash10-0h01-0940000000-a14203384331e709252f | Spectrum | | GC-MS | 4-Hydroxyphenylacetic acid, non-derivatized, GC-MS Spectrum | splash10-03fs-1930000000-80c21819072fb01958dc | Spectrum | | GC-MS | 4-Hydroxyphenylacetic acid, non-derivatized, GC-MS Spectrum | splash10-00di-9410000000-678591f03aba45c2a6ae | Spectrum | | GC-MS | 4-Hydroxyphenylacetic acid, non-derivatized, GC-MS Spectrum | splash10-0h0r-2940000000-760b6c506072a61059c0 | Spectrum | | GC-MS | 4-Hydroxyphenylacetic acid, non-derivatized, GC-MS Spectrum | splash10-03fs-1931100000-50456fed0c5ef95ecb57 | Spectrum | | Predicted GC-MS | 4-Hydroxyphenylacetic acid, non-derivatized, Predicted GC-MS Spectrum - 70eV, Positive | splash10-0a4i-4900000000-b6f6363476ffa290862f | Spectrum | | Predicted GC-MS | 4-Hydroxyphenylacetic acid, 2 TMS, Predicted GC-MS Spectrum - 70eV, Positive | splash10-004i-5930000000-abf5245dd22d012d04f8 | Spectrum | | Predicted GC-MS | 4-Hydroxyphenylacetic acid, non-derivatized, Predicted GC-MS Spectrum - 70eV, Positive | Not Available | Spectrum | | Predicted GC-MS | 4-Hydroxyphenylacetic acid, TMS_1_1, Predicted GC-MS Spectrum - 70eV, Positive | Not Available | Spectrum | | Predicted GC-MS | 4-Hydroxyphenylacetic acid, TMS_1_2, Predicted GC-MS Spectrum - 70eV, Positive | Not Available | Spectrum | | Predicted GC-MS | 4-Hydroxyphenylacetic acid, TBDMS_1_1, Predicted GC-MS Spectrum - 70eV, Positive | Not Available | Spectrum | | Predicted GC-MS | 4-Hydroxyphenylacetic acid, TBDMS_1_2, Predicted GC-MS Spectrum - 70eV, Positive | Not Available | Spectrum | | Predicted GC-MS | 4-Hydroxyphenylacetic acid, TBDMS_2_1, Predicted GC-MS Spectrum - 70eV, Positive | Not Available | Spectrum |
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| MS/MS | | Type | Description | Splash Key | View |
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| MS/MS | LC-MS/MS Spectrum - Quattro_QQQ 10V, Negative (Annotated) | splash10-0pb9-0900000000-e3dfb4b180d858b3a854 | 2012-07-24 | View Spectrum | | MS/MS | LC-MS/MS Spectrum - Quattro_QQQ 25V, Negative (Annotated) | splash10-056r-9400000000-9a6cb39e019a0b40a666 | 2012-07-24 | View Spectrum | | MS/MS | LC-MS/MS Spectrum - Quattro_QQQ 40V, Negative (Annotated) | splash10-0kdl-9400000000-35ecc22161defddc7b21 | 2012-07-24 | View Spectrum | | MS/MS | LC-MS/MS Spectrum - EI-B (HITACHI M-68) , Positive | splash10-0a4i-2900000000-3939c62b0d7f649ff402 | 2012-08-31 | View Spectrum | | MS/MS | LC-MS/MS Spectrum - EI-B (HITACHI M-52) , Positive | splash10-0a4i-6900000000-fdb73325a31c758496e9 | 2012-08-31 | View Spectrum | | MS/MS | LC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 10V, Negative | splash10-0zfr-0900000000-369a695f2c7bcf3a4a5c | 2012-08-31 | View Spectrum | | MS/MS | LC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 20V, Negative | splash10-0a4i-4900000000-88da569804a98e1a99ea | 2012-08-31 | View Spectrum | | MS/MS | LC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 30V, Negative | splash10-0a4i-9300000000-eef23e2f30d876f4a1f9 | 2012-08-31 | View Spectrum | | MS/MS | LC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 40V, Negative | splash10-0a4i-9000000000-0a95379b7cea57386b0b | 2012-08-31 | View Spectrum | | MS/MS | LC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 50V, Negative | splash10-0a4i-9000000000-dd0a48d9d6528f6a0a6a | 2012-08-31 | View Spectrum | | MS/MS | LC-MS/MS Spectrum - LC-ESI-QQ , negative | splash10-0zfr-0900000000-369a695f2c7bcf3a4a5c | 2017-09-14 | View Spectrum | | MS/MS | LC-MS/MS Spectrum - LC-ESI-QQ , negative | splash10-0a4i-4900000000-88da569804a98e1a99ea | 2017-09-14 | View Spectrum | | MS/MS | LC-MS/MS Spectrum - LC-ESI-QQ , negative | splash10-0a4i-9300000000-eef23e2f30d876f4a1f9 | 2017-09-14 | View Spectrum | | MS/MS | LC-MS/MS Spectrum - LC-ESI-QQ , negative | splash10-0a4i-9000000000-0a95379b7cea57386b0b | 2017-09-14 | View Spectrum | | MS/MS | LC-MS/MS Spectrum - LC-ESI-QQ , negative | splash10-0a4i-9000000000-dd0a48d9d6528f6a0a6a | 2017-09-14 | View Spectrum | | MS/MS | LC-MS/MS Spectrum - Linear Ion Trap , negative | splash10-0a4i-0900000000-02cd23fa5ff37594d2be | 2017-09-14 | View Spectrum | | MS/MS | LC-MS/MS Spectrum - Linear Ion Trap , negative | splash10-0a4i-0900000000-bbac468eb7ce6ea99123 | 2017-09-14 | View Spectrum | | MS/MS | LC-MS/MS Spectrum - Linear Ion Trap , positive | splash10-0a4i-1900000000-05d18e7bb4163e35e2aa | 2017-09-14 | View Spectrum | | MS/MS | LC-MS/MS Spectrum - Linear Ion Trap , positive | splash10-0a4i-1900000000-9a0086561d6f8a169670 | 2017-09-14 | View Spectrum | | Predicted MS/MS | Predicted LC-MS/MS Spectrum - 10V, Positive | splash10-0udr-0900000000-398dff08b5b2a56e658c | 2016-09-12 | View Spectrum | | Predicted MS/MS | Predicted LC-MS/MS Spectrum - 20V, Positive | splash10-0a4i-0900000000-5f75ea6de2d6bad624d8 | 2016-09-12 | View Spectrum | | Predicted MS/MS | Predicted LC-MS/MS Spectrum - 40V, Positive | splash10-0a6r-9700000000-68d0f4a3b2f7ccfcc2a4 | 2016-09-12 | View Spectrum | | Predicted MS/MS | Predicted LC-MS/MS Spectrum - 10V, Negative | splash10-0zfr-0900000000-7ce02fea5a9ef38024f2 | 2016-09-12 | View Spectrum | | Predicted MS/MS | Predicted LC-MS/MS Spectrum - 20V, Negative | splash10-0zfr-0900000000-12e388b0927ed1c6e166 | 2016-09-12 | View Spectrum | | Predicted MS/MS | Predicted LC-MS/MS Spectrum - 40V, Negative | splash10-0a59-2900000000-ae1870eee4853c57a447 | 2016-09-12 | View Spectrum |
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| NMR | | Type | Description | | View |
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| 1D NMR | 1H NMR Spectrum (1D, 600 MHz, H2O, experimental) | | Spectrum | | 1D NMR | 13C NMR Spectrum (1D, 125 MHz, H2O, experimental) | | Spectrum | | 1D NMR | 1H NMR Spectrum (1D, 400 MHz, DMSO-d6, experimental) | | Spectrum | | 1D NMR | 1H NMR Spectrum (1D, D2O, experimental) | | Spectrum | | 1D NMR | 13C NMR Spectrum (1D, D2O, experimental) | | Spectrum | | 1D NMR | 1H NMR Spectrum (1D, 100 MHz, D2O, predicted) | | Spectrum | | 1D NMR | 13C NMR Spectrum (1D, 100 MHz, D2O, predicted) | | Spectrum | | 1D NMR | 1H NMR Spectrum (1D, 1000 MHz, D2O, predicted) | | Spectrum | | 1D NMR | 13C NMR Spectrum (1D, 1000 MHz, D2O, predicted) | | Spectrum | | 1D NMR | 1H NMR Spectrum (1D, 200 MHz, D2O, predicted) | | Spectrum | | 1D NMR | 13C NMR Spectrum (1D, 200 MHz, D2O, predicted) | | Spectrum | | 1D NMR | 1H NMR Spectrum (1D, 300 MHz, D2O, predicted) | | Spectrum | | 1D NMR | 13C NMR Spectrum (1D, 300 MHz, D2O, predicted) | | Spectrum | | 1D NMR | 1H NMR Spectrum (1D, 400 MHz, D2O, predicted) | | Spectrum | | 1D NMR | 13C NMR Spectrum (1D, 400 MHz, D2O, predicted) | | Spectrum | | 1D NMR | 1H NMR Spectrum (1D, 500 MHz, D2O, predicted) | | Spectrum | | 1D NMR | 13C NMR Spectrum (1D, 500 MHz, D2O, predicted) | | Spectrum | | 1D NMR | 1H NMR Spectrum (1D, 600 MHz, D2O, predicted) | | Spectrum | | 1D NMR | 13C NMR Spectrum (1D, 600 MHz, D2O, predicted) | | Spectrum | | 1D NMR | 1H NMR Spectrum (1D, 700 MHz, D2O, predicted) | | Spectrum | | 1D NMR | 13C NMR Spectrum (1D, 700 MHz, D2O, predicted) | | Spectrum | | 1D NMR | 1H NMR Spectrum (1D, 800 MHz, D2O, predicted) | | Spectrum | | 1D NMR | 13C NMR Spectrum (1D, 800 MHz, D2O, predicted) | | Spectrum | | 1D NMR | 1H NMR Spectrum (1D, 900 MHz, D2O, predicted) | | Spectrum | | 1D NMR | 13C NMR Spectrum (1D, 900 MHz, D2O, predicted) | | Spectrum | | 2D NMR | [1H, 13C]-HSQC NMR Spectrum (2D, 400 MHz, H2O, experimental) | | Spectrum |
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| External Links |
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| ChemSpider ID | 124 |
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| ChEMBL ID | CHEMBL1772 |
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| KEGG Compound ID | C00642 |
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| Pubchem Compound ID | 127 |
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| Pubchem Substance ID | Not Available |
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| ChEBI ID | 18101 |
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| Phenol-Explorer ID | 573 |
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| DrugBank ID | Not Available |
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| HMDB ID | HMDB00020 |
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| CRC / DFC (Dictionary of Food Compounds) ID | FCL13-X:FCL13-X |
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| EAFUS ID | Not Available |
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| Dr. Duke ID | 4-HYDROXYPHENYLACETIC-ACID|P-HYDROXYPHENYLACETIC-ACID |
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| BIGG ID | 35599 |
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| KNApSAcK ID | Not Available |
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| HET ID | 4HP |
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| Food Biomarker Ontology | Not Available |
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| VMH ID | Not Available |
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| Flavornet ID | Not Available |
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| GoodScent ID | Not Available |
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| SuperScent ID | Not Available |
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| Wikipedia ID | 4-hydroxyphenylacetic_acid |
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| Phenol-Explorer Metabolite ID | 573 |
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| Duplicate IDS | Not Available |
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| Old DFC IDS | Not Available |
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| Associated Foods |
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| Food | Content Range | Average | Reference |
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| Food | | | Reference |
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| Biological Effects and Interactions |
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| Health Effects / Bioactivities | Not Available |
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| Enzymes | Not Available |
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| Pathways | | Name | SMPDB Link | KEGG Link |
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| Tyrosine Metabolism | SMP00006 | map00350 | | Metabolism and Physiological Effects of Para-cresol | SMP0123214 | Not Available | | Metabolism and Physiological Effects of Para-cresyl glucuronide | SMP0123299 | Not Available | | Metabolsim and Physiological Effects of 4-Ethylphenylsulfate | SMP0125541 | Not Available | | Metabolism and Physiological Effects of p-Cresol sulphate | SMP0126850 | Not Available | | Metabolism and Physiological Effects of 4-Hydroxyphenylacetic acid | SMP0126879 | Not Available |
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| Metabolism | Not Available |
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| Biosynthesis | Not Available |
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| Organoleptic Properties |
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| Flavours | Not Available |
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| Files |
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| MSDS | show |
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| References |
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| Synthesis Reference | Not Available |
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| General Reference | Not Available |
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| Content Reference | — Rothwell JA, Pérez-Jiménez J, Neveu V, Medina-Ramon A, M'Hiri N, Garcia Lobato P, Manach C, Knox K, Eisner R, Wishart D, Scalbert A. (2013) Phenol-Explorer 3.0: a major update of the Phenol-Explorer database to incorporate data on the effects of food processing on polyphenol content. Database, 10.1093/database/bat070. — Duke, James. 'Dr. Duke's Phytochemical and Ethnobotanical Databases. United States Department of Agriculture.' Agricultural Research Service, Accessed April 27 (2004).
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